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Geometric surface feature detection using statistical based metrics
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DOI：10.1016/j.precisioneng.2019.07.016.png)
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Abstract
En 中文
The nature and quality of a component's surface affects its final functionality, expected life span, and perceived value. The economic advantage gained by achieving the desired surface quality drives interest in methods capable of detecting and quantifying surface topography features. This paper presents a new statistically based approach capable of providing insights on the geometric characteristics of a surface, and both detecting and quantifying isolated geometric surface features. In this approach an areal surface measurement, post removal of form and waviness components, is considered as a set of constituent profile measurements, i.e. each column of data is considered as a single profile. Analysis of this data set's variance can detect the presence of surface anisotropy, the spatial wavelength of repeating features, the presence of scratches and localized surface imperfections (dirt or digs). The paper outlines the method's capabilities and limitations, and draws parallels with surface texture parameters described within the ISO 25178-2 standard.
Keywords:
Surface metrology
Feature characterization
Statistical analysis
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